the.com/search engine

means A system that scours an indexed copy of the web to find pages matching what you typed, then ranks them by guessed relevance.

from 'Engine' traces back through French to Latin ingenium, meaning innate talent or cleverness — the same root gives us 'ingenious.' An engine was originally any clever contrivance, long before it meant pistons and combustion. 'Search' comes from Old French cerchier, 'to go about seeking,' from Latin circare, 'to go around' — kin to 'circus' and 'circle.' So a search engine is, by its bones, a 'clever device for going around looking' — which is exactly what a web crawler does, tracing circles through links long before anyone had coined the phrase for it in the 1990s.